Jackie Y. Ying,Shona Pek,Pemakorn Pitukmanorom,Siti Thaharah Mohamed
申请号：
US14123935
公开号：
US20140199381A1
申请日:
2012.06.08
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The specification describes a substance comprising a plurality of microparticles. The microparticles comprise a core comprising a first polymer and a shell surrounding said core and comprising the first polymer and a second polymer, wherein the second polymer is less rapidly degradable than the first polymer. A process for making the microparticles and uses of the microparticles are also described.
